CN108642399A - One kind having base high-entropy alloy and preparation method thereof - Google Patents
One kind having base high-entropy alloy and preparation method thereof Download PDFInfo
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Abstract
One kind having base high-entropy alloy and preparation method thereof, it is related to a kind of high-entropy alloy and preparation method.The invention aims to solve the poor mechanical property of existing high-entropy alloy, the interior problem containing the brittle intermetallic compound phase of bulk and plasticity difference of high-entropy alloy.One kind has base high-entropy alloy to be prepared by mass percentage by 50%~90% alloy substrate and 10%~50% alloy element.Method：One, prepare raw material；Two, melting is carried out to the raw material for having base high-entropy alloy weighed in step 1 using electric arc melting method or induction melting method, has obtained base high-entropy alloy.It is 1000MPa~2000MPa that prepared by the present invention, which has the yield strength of base high-entropy alloy, and fracture strength is 2000MPa~4000MPa, limiting strain εp(%) is 20%~70%.The present invention, which can get one kind, base high-entropy alloy.
Description
Technical field
The present invention relates to a kind of high-entropy alloys and preparation method thereof.
Background technology
It is a small amount of by adding often using one or two kinds of alloying elements as matrix in conventional alloys design of material field
Other elements improve the magnetic of alloy material as alloy element, the mechanical properties such as hardness, intensity to improve matrix alloy
The physical properties such as performance, electrical property, such as all kinds of steel, aluminium alloy, titanium alloy, nickel-base high-temperature alloy material and Ti-Al, Ni-
The inter-metallic compound materials such as Al.
2004, TaiWan, China scholar Ye Junwei jumped out the mindset of conventional alloys design, took the lead in proposing high entropy conjunction
The design philosophy of gold.High-entropy alloy is defined as：Component number n >=5, each element equimolar ratio or nearly equimolar ratio,
All elements atomic percentage content is no more than 35% novel multi-principal elements alloy.There is no a kind of constituent content super in high-entropy alloy
50% is crossed, because without so-called alloy substrate.Element number is more in high-entropy alloy and each alloying element content compared with
It is high so that the entropy of mixing of alloy is larger, cause alloying element to tend to confusing array and formed simple body-centered cubic (BCC) or
Face-centered cubic (FCC) phase.The lattice structure high distortion of high-entropy alloy, in addition " the cocktail effect " of each element performance so that
This new alloy material has high rigidity, high intensity, high temperature creep-resisting, high temperature oxidation resisting, corrosion-resistant, high resistivity and good
The excellent comprehensive performance such as electromagnetic property, application prospect are very wide.
Past during the last ten years, high entropy alloy material by domestic and foreign scholars extensive research, preparation method, thermodynamics,
Dynamics, mutually the numerous areas such as formation rule, structure stability, mechanical property, magnetic performance and electric heating property achieve
Impressive progress.2013, professor Li Bangsheng was put forward for the first time the general of base high-entropy alloy by introducing matrix in high-entropy alloy
It reads, and successfully developing some row, there is novel nano-structure and excellent mechanical performance to have base high entropy alloy material, open height
Entropy alloy designs frontier.Therefore, research and development have base high-entropy alloy with excellent microscopic structure and mechanical property, have very
Important meaning and wide application prospect.
But in existing conventional alloys design process, when the alloying element content of addition is more, it is easy to form bulk brittleness
Intermetallic compound phase, deteriorate the performance of alloy.Therefore, there is limitation in traditional alloyage process；
In existing high-entropy alloy design process, definition and design principle limit the design space of alloy, and existing height
The hardness of entropy alloy is big, intensity is high, but plasticity is often poor, limiting strain εp(%) is less than 30%.Meanwhile according to the high entropy of tradition
The mentality of designing of alloy, it is difficult to alloy property be greatly optimized, because the constituent adjustment range of traditional high-entropy alloy is often
It is smaller.Therefore, to obtain the excellent new alloy material of comprehensive mechanical property, the intension of high-entropy alloy is urgently broken through, and exploitation is new
Design principle and method.
Invention content
It is brittle to contain bulk the invention aims to solve the poor mechanical property of existing high-entropy alloy, in high-entropy alloy
The problem of intermetallic compound phase and plasticity difference, and providing one kind having base high-entropy alloy and preparation method thereof.
One kind has base high-entropy alloy by mass percentage by 50%~90% alloy substrate and 10%~50% alloying member
Element is prepared；The alloy substrate is a kind of member in Fe, Al, Cr, Ni, Co, Cu, Ti, Mn, Mo, Zr, Hf, Nb and Sn
Element or in which two kinds of elements；The alloy element is in Fe, Al, Cr, Ni, Co, Cu, Ti, Mn, Mo, Zr, Hf, Nb and Sn
Two kinds of elements or in which two or more elements；When the alloy substrate is two kinds of elements, the molar ratio between two kinds of elements
Value range for b, b is 0.5≤b≤2；Molar ratio in the alloy element between arbitrary two kinds of elements is a, and a
Meet：0.8≤a≤1.25.
A kind of preparation method having base high-entropy alloy, is completed according to the following steps：
One, prepare raw material：
50%~90% alloy substrate and 10%~50% alloy element are weighed by mass percentage, have obtained the high entropy of base
The raw material of alloy；
Alloy substrate described in step 1 is in Fe, Al, Cr, Ni, Co, Cu, Ti, Mn, Mo, Zr, Hf, Nb and Sn
A kind of element or in which two kinds of elements；
Alloy element described in step 1 is in Fe, Al, Cr, Ni, Co, Cu, Ti, Mn, Mo, Zr, Hf, Nb and Sn
Two kinds of elements or in which two or more elements；
When alloy substrate described in step 1 is two kinds of elements, the molar ratio between two kinds of elements is b, the value model of b
It encloses for 0.5≤b≤2；
Molar ratio in alloy element described in step 1 between arbitrary two kinds of elements is a, and the value range of a is
0.8≤a≤1.25。
Two, using electric arc melting method or induction melting method to weighed in step 1 have the raw material of base high-entropy alloy into
Row melting has obtained base high-entropy alloy.
Advantages of the present invention：
One, the present invention in have base high-entropy alloy and preparation have base high-entropy alloy method and the prior art difference it
Be in：Each constituent content is 5%~35% in traditional high-entropy alloy, and any type constituent content is respectively less than 50%, that is, exists
Matrix is not present in traditional high-entropy alloy；And the mass fraction for having alloy substrate in base high-entropy alloy in the present invention is more than
50%, that is, there is matrix, therefore be referred to as have base high-entropy alloy；
Two, it is of the invention have in base high-entropy alloy alloy with traditional high-entropy alloy the difference is that：Element species and
Content is relatively more, and therefore, the entropy for having base high-entropy alloy of the invention is bigger than the entropy of traditional high-entropy alloy, is a kind of therefore
Novel high-entropy alloy；
Three, the of the invention design limitation for having alloy in base high-entropy alloy to breach traditional high-entropy alloy, greatly expands
The intension and composition design range of high-entropy alloy；The present invention optimizes conjunction by selecting appropriate element as alloy substrate
The type and content of alloying element, can prepare with excellent microscopic structure and comprehensive mechanical property it is excellent have base high-entropy alloy
Material, application prospect are very wide；
It is 1000MPa~2000MPa that four, prepared by the present invention, which has the yield strength of base high-entropy alloy, and fracture strength is
2000MPa~4000MPa, limiting strain εp(%) is 20%~70%；
What five, prepared by the present invention has base high-entropy alloy, has more than high-entropy alloy than tradition equimolar ratio or close etc. rub
Add excellent microscopic structure and comprehensive mechanical property, such as can get nano junction of a large amount of nanometer precipitated phase Dispersed precipitates in matrix
Structure microscopic structure, to obtain high-strength, high-plastic excellent comprehensive mechanical property.
The present invention, which can get one kind, base high-entropy alloy.
Description of the drawings
Fig. 1 is Fe prepared by embodiment one55(AlCrNi)45The XRD spectrum of iron-based high-entropy alloy；
Fig. 2 is Fe prepared by embodiment one55(AlCrNi)45The SEM microstructure pictures of iron-based high-entropy alloy；
Fig. 3 is Fe prepared by embodiment one55(AlCrNi)45The compressive stress strain curve of iron-based high-entropy alloy；
Fig. 4 is (FeCr) prepared by embodiment two80(AlNi)20The XRD spectrum of the biradical high-entropy alloy of siderochrome；
Fig. 5 is (FeCr) prepared by embodiment two80(AlNi)20The SEM microstructure pictures of the biradical high-entropy alloy of siderochrome；
Fig. 6 is (FeCr) prepared by embodiment two80(AlNi)20The compression stress of the biradical high-entropy alloy of siderochrome-strain is bent
Line.
Specific implementation mode
Specific implementation mode one：Present embodiment, which is one kind, has base high-entropy alloy to be closed by mass percentage by 50%~90%
Auri body and 10%~50% alloy element are prepared；The alloy substrate be Fe, Al, Cr, Ni, Co, Cu, Ti,
A kind of element in Mn, Mo, Zr, Hf, Nb and Sn or in which two kinds of elements；The alloy element be Fe, Al, Cr, Ni,
Two kinds of elements in Co, Cu, Ti, Mn, Mo, Zr, Hf, Nb and Sn or in which two or more elements；The alloy substrate is two
When kind element, the molar ratio between two kinds of elements is b, and the value range of b is 0.5≤b≤2；Appoint in the alloy element
Molar ratio between two kinds of elements of meaning is a, and a meets：0.8≤a≤1.25.
Specific implementation mode two：Present embodiment is that a kind of to have the preparation method of base high-entropy alloy be to complete according to the following steps
's：
One, prepare raw material：
50%~90% alloy substrate and 10%~50% alloy element are weighed by mass percentage, have obtained the high entropy of base
The raw material of alloy；
Alloy substrate described in step 1 is in Fe, Al, Cr, Ni, Co, Cu, Ti, Mn, Mo, Zr, Hf, Nb and Sn
A kind of element or in which two kinds of elements；
Alloy element described in step 1 is in Fe, Al, Cr, Ni, Co, Cu, Ti, Mn, Mo, Zr, Hf, Nb and Sn
Two kinds of elements or in which two or more elements；
When alloy substrate described in step 1 is two kinds of elements, the molar ratio between two kinds of elements is b, the value model of b
It encloses for 0.5≤b≤2；
Molar ratio in alloy element described in step 1 between arbitrary two kinds of elements is a, and the value range of a is
0.8≤a≤1.25。
Two, using electric arc melting method or induction melting method to weighed in step 1 have the raw material of base high-entropy alloy into
Row melting has obtained base high-entropy alloy.
The advantages of present embodiment：
One, base high-entropy alloy and preparation have the method for base high-entropy alloy and the difference of the prior art in present embodiment
Point place is：Each constituent content is 5%~35% in traditional high-entropy alloy, and any type constituent content is respectively less than 50%,
Matrix is not present i.e. in traditional high-entropy alloy；And the mass fraction for having alloy substrate in base high-entropy alloy in present embodiment
More than 50%, that is, there is matrix, therefore is referred to as have base high-entropy alloy；
Two, present embodiment have in base high-entropy alloy alloy with traditional high-entropy alloy the difference is that：Element Species
Class and content are relatively more, and therefore, the entropy for having base high-entropy alloy of present embodiment is bigger than the entropy of traditional high-entropy alloy, because
This, is a kind of novel high-entropy alloy；
Three, present embodiment has the design limitation that alloy in base high-entropy alloy breaches traditional high-entropy alloy, greatly
The intension and composition design range of high-entropy alloy are expanded；Present embodiment by selecting appropriate element as alloy substrate,
And the type and content of optimized alloy element, can prepare with excellent microscopic structure and comprehensive mechanical property it is excellent have base
High entropy alloy material, application prospect are very wide；
It is 1000MPa~2000MPa, fracture strength that four, prepared by present embodiment, which has the yield strength of base high-entropy alloy,
For 2000MPa~4000MPa, limiting strain εp(%) is 20%~70%；
What five, prepared by present embodiment has base high-entropy alloy, has than high-entropy alloy than tradition equimolar ratio or close etc. rub
There are more excellent microscopic structure and comprehensive mechanical property, such as can get a large amount of nanometer precipitated phase Dispersed precipitate receiving in matrix
Rice structure microscopic structure, to obtain high-strength, high-plastic excellent comprehensive mechanical property.
Present embodiment, which can get one kind, base high-entropy alloy.
Specific implementation mode three：The difference of present embodiment and specific implementation mode two is：Electricity described in step 2
Arc method of smelting is completed according to the following steps：
1., by weighed in step 1 have the raw material of base high-entropy alloy according to material melting point sequence from low to high successively plus
Enter into the copper mold crucible in non-consumable vacuum arc melting furnace；
2., non-consumable vacuum arc melting furnace is vacuumized, until the vacuum degree of non-consumable vacuum arc melting furnace is low
In 1.0 × 10-3MPa, then it is filled with argon gas into non-consumable vacuum arc melting furnace, until non-consumable vacuum arc melting furnace is non-certainly
The pressure consumed in vacuum arc melting furnace is 0.05MPa；
3., repeat step 2. 3 times to 5 times；
4., in the case where melting electric current is 250A~400A, melt back has the raw material 5 times~6 times of base high-entropy alloy, molten every time
The refining time is 2min~5min, and furnace cooling has obtained base high-entropy alloy.Other steps are identical with embodiment two.
Specific implementation mode four：One of present embodiment and specific implementation mode two to three difference are：Institute in step 1
Molar ratio in the alloy element stated between arbitrary two kinds of elements is a, a=1.Other steps and specific implementation mode two to three
It is identical.
Specific implementation mode five：One of present embodiment and specific implementation mode two to four difference are：Institute in step 1
When the alloy substrate stated is two kinds of elements, the molar ratio between two kinds of elements is b, b=1.Other steps and specific implementation mode
Two to four is identical.
Specific implementation mode six：One of present embodiment and specific implementation mode two to five difference are：It is pressed in step 1
Mass percent weighs 55% alloy substrate and 45% alloy element, obtains the raw material of base high-entropy alloy.Other steps with
Specific implementation mode two to five is identical.
Specific implementation mode seven：One of present embodiment and specific implementation mode two to six difference are：It is pressed in step 1
Mass percent weighs 80% alloy substrate and 20% alloy element, obtains the raw material of base high-entropy alloy.Other steps with
Specific implementation mode two to six is identical.
Specific implementation mode eight：One of present embodiment and specific implementation mode two to seven difference are：Institute in step 1
The alloy substrate stated is Fe.Other steps are identical as specific implementation mode two to seven.
Specific implementation mode nine：One of present embodiment and specific implementation mode two to eight difference are：Institute in step 1
The alloy element stated is Al, Cr and Ni.Other steps are identical as specific implementation mode two to eight.
Specific implementation mode ten：One of present embodiment and specific implementation mode two to nine difference are：Institute in step 2
The induction melting method stated is completed according to the following steps：
1., by weighed in step 1 have the raw material of base high-entropy alloy according to material melting point sequence from low to high successively plus
Enter in the ceramic crucible into induction melting furnace；
2., induction melting furnace is vacuumized, until the vacuum degree of induction melting furnace be less than 2.0 × 10-3MPa, then to sense
It answers and is filled with argon gas in smelting furnace, until the pressure in induction melting furnace is to 0.05MPa；
3., repeat step 2. 3 times to 5 times；
4., with melting electric current be under an argon atmosphere under 50A~70A melting have the raw material 5min of base high-entropy alloy~
10min, furnace cooling have obtained base high-entropy alloy.
Beneficial effects of the present invention are verified using following embodiment：
Embodiment one：A kind of preparation method having base high-entropy alloy is completed according to the following steps：
One, prepare raw material：
55% alloy substrate and 45% alloy element are weighed by mass percentage, obtain the raw material of base high-entropy alloy；
Alloy substrate described in step 1 is Fe；
Alloy element described in step 1 is Al, Cr and Ni；In the alloy element arbitrary two kinds of elements it
Between molar ratio be a, a=1；
Two, the raw material for having base high-entropy alloy weighed in step 1 is successively added according to the sequence of material melting point from low to high
Enter into the copper mold crucible in non-consumable vacuum arc melting furnace；
Three, non-consumable vacuum arc melting furnace is vacuumized, until the vacuum degree of non-consumable vacuum arc melting furnace is low
In 1.0 × 10-3MPa, then it is filled with argon gas into non-consumable vacuum arc melting furnace, until non-consumable vacuum arc melting furnace is non-certainly
The pressure consumed in vacuum arc melting furnace is 0.05MPa；
Four, step 3 is repeated 3 times；
Five, in the case where melting electric current is 250A, melt back has the raw material 5 times of base high-entropy alloy, each smelting time to be
2min, furnace cooling obtain Fe55(AlCrNi)45Iron-based high-entropy alloy.
Fe prepared by embodiment one55(AlCrNi)45Iron-based high-entropy alloy polished, polish after, utilize Japan Ricoh
D/max-rB type X-ray diffractometers carry out material phase analysis；As shown in Figure 1；
Fig. 1 is Fe prepared by embodiment one55(AlCrNi)45The XRD spectrum of iron-based high-entropy alloy；
From fig. 1, it can be seen that Fe prepared by embodiment one55(AlCrNi)45Iron-based high-entropy alloy has simple crystal structure,
In conjunction with microscopic examination result it is found that this has base high-entropy alloy by (Ni, Fe) Al phase compositions of α-Fe matrixes phases and B2 structures,
The two lattice constant is very close, therefore diffraction overlap of peaks.
Fig. 2 is Fe prepared by embodiment one55(AlCrNi)45The SEM microstructure pictures of iron-based high-entropy alloy；
As can be seen from Figure 2, the Fe that prepared by embodiment one55(AlCrNi)45In iron-based high-entropy alloy there is a large amount of nanometer to be precipitated
Phase, size are about 200~300nm.
The Fe prepared from embodiment one55(AlCrNi)45It is cut in iron-based high-entropy alloyCylindrical compression examination
Sample utilizes INSTRON-5569 mechanics machines to measure compression performance at ambient temperature after the grinding process of surface, and pressure head adds
Load speed is 1mm/min, as shown in Figure 3；
Fig. 3 is Fe prepared by embodiment one55(AlCrNi)45The compressive stress strain curve of iron-based high-entropy alloy；
The Fe that as can be seen from Figure 3 prepared by embodiment one55(AlCrNi)45Iron-based high-entropy alloy compression yield strength is more than
1000MPa, compressive deformation are not broken more than 60%, thus have excellent comprehensive mechanical property.
Fe prepared by embodiment one55(AlCrNi)45The yield strength of iron-based high-entropy alloy is 1028MPa, and fracture strength is
More than 3000MPa, limiting strain εp(%) is more than 60%.
Embodiment two：A kind of preparation method having base high-entropy alloy, is completed according to the following steps：
One, prepare raw material：
80% alloy substrate and 20% alloy element are weighed by mass percentage, obtain the raw material of base high-entropy alloy；
Alloy substrate described in step 1 is Fe and Cr；Fe and Cr molar ratios are b, b=1 in the alloy substrate；
Alloy element described in step 1 is Al and Ni；The molar ratio of Al and Ni is a in the alloy element,
A=1；
Two, the raw material for having base high-entropy alloy weighed in step 1 is successively added according to the sequence of material melting point from low to high
Enter in the ceramic crucible into induction melting furnace；
Three, induction melting furnace is vacuumized, until the vacuum degree of induction melting furnace is less than 2.0 × 10-3MPa, then to sense
It answers and is filled with argon gas in smelting furnace, until the pressure in induction melting furnace is to 0.05MPa；
Four, step 3 is repeated 5 times；
Five, it is that melting has the raw material 10min of base high-entropy alloy under 60A with melting electric current under an argon atmosphere, furnace cooling,
It obtains (FeCr)80(AlNi)20The biradical high-entropy alloy of siderochrome.
(FeCr) prepared from embodiment two80(AlNi)20Sample is cut in the biradical high-entropy alloy of siderochrome, through polishing, polishing
Afterwards, material phase analysis is carried out using Japan Ricoh D/max-rB type X-ray diffractometers, as shown in Figure 4；
Fig. 4 is (FeCr) prepared by embodiment two80(AlNi)20The XRD spectrum of the biradical high-entropy alloy of siderochrome；
As can be seen from Figure 4, (FeCr) that prepared by embodiment two80(AlNi)20The biradical high-entropy alloy of siderochrome has simple crystal
Structure, in conjunction with microscopic examination it is found that this has base high-entropy alloy by (Ni, Fe) Al phase groups of α-Fe solid solution phases and B2 structures
At.
Fig. 5 is (FeCr) prepared by embodiment two80(AlNi)20The SEM microstructure pictures of the biradical high-entropy alloy of siderochrome；
As can be seen from Figure 5, (FeCr) that prepared by embodiment two80(AlNi)20The biradical high-entropy alloy of siderochrome has a large amount of nanometer
Precipitated phase, nanometer phase size are about 100~200nm.
(FeCr) prepared from embodiment two80(AlNi)20It is cut in the biradical high-entropy alloy of siderochromeCylinder
Sample is compressed, after the grinding process of surface, utilizes INSTRON-5569 mechanics machines to measure compression performance at ambient temperature,
Pressure head loading velocity is 1mm/min, as shown in Figure 6；
Fig. 6 is (FeCr) prepared by embodiment two80(AlNi)20The compression stress of the biradical high-entropy alloy of siderochrome-strain is bent
Line.
As can be seen from Figure 6, (FeCr) that prepared by embodiment two80(AlNi)20The biradical high-entropy alloy of siderochrome has higher surrender
Intensity and fracture strength, while plasticity is preferable, therefore there is excellent synthesis mechanical property.
(FeCr) prepared by embodiment two80(AlNi)20The yield strength of the biradical high-entropy alloy of siderochrome is 1261MPa, fracture
Intensity is 2772MPa, limiting strain εp(%) is 47%.
Claims (10)
1. one kind having base high-entropy alloy, it is characterised in that one kind has base high-entropy alloy by mass percentage by 50%~90% alloy
Matrix and 10%~50% alloy element are prepared；The alloy substrate be Fe, Al, Cr, Ni, Co, Cu, Ti, Mn,
A kind of element in Mo, Zr, Hf, Nb and Sn or in which two kinds of elements；The alloy element be Fe, Al, Cr, Ni, Co,
Two kinds of elements in Cu, Ti, Mn, Mo, Zr, Hf, Nb and Sn or in which two or more elements；The alloy substrate is two kinds of members
When plain, the molar ratio between two kinds of elements is b, and the value range of b is 0.5≤b≤2；Arbitrary two in the alloy element
Molar ratio between kind element is a, and a meets：0.8≤a≤1.25.
2. a kind of preparation method having base high-entropy alloy as described in claim 1, it is characterised in that one kind having base high-entropy alloy
Preparation method complete according to the following steps：
One, prepare raw material：
50%~90% alloy substrate and 10%~50% alloy element are weighed by mass percentage, have obtained base high-entropy alloy
Raw material；
Alloy substrate described in step 1 is a kind of member in Fe, Al, Cr, Ni, Co, Cu, Ti, Mn, Mo, Zr, Hf, Nb and Sn
Element or in which two kinds of elements；
Alloy element described in step 1 is two kinds in Fe, Al, Cr, Ni, Co, Cu, Ti, Mn, Mo, Zr, Hf, Nb and Sn
Element or in which two or more elements；
When alloy substrate described in step 1 is two kinds of elements, the molar ratio between two kinds of elements is b, and the value range of b is
0.5≤b≤2；
Molar ratio in alloy element described in step 1 between arbitrary two kinds of elements is a, and a meets：0.8≤a≤
1.25。
Two, the raw material for having base high-entropy alloy weighed in step 1 is melted using electric arc melting method or induction melting method
Refining, has obtained base high-entropy alloy.
3. a kind of preparation method having base high-entropy alloy according to claim 2, it is characterised in that described in step 2
Electric arc melting method is completed according to the following steps：
1., there is the raw material of base high-entropy alloy to be successively added to according to the sequence of material melting point from low to high by what is weighed in step 1
In copper mold crucible in non-consumable vacuum arc melting furnace；
2., non-consumable vacuum arc melting furnace is vacuumized, until the vacuum degree of non-consumable vacuum arc melting furnace be less than 1.0
×10-3MPa, then it is filled with argon gas into non-consumable vacuum arc melting furnace, until non-consumable vacuum arc melting furnace non-consumable vacuum
Pressure in arc-melting furnace is 0.05MPa；
3., repeat step 2. 3 times to 5 times；
4., in the case where melting electric current is 250A~400A, melt back has a raw material 5 times~6 times of base high-entropy alloy, when each melting
Between be 2min~5min, furnace cooling obtained base high-entropy alloy.
4. a kind of preparation method having base high-entropy alloy according to claim 2, it is characterised in that described in step 1
Molar ratio in alloy element between arbitrary two kinds of elements is a, a=1.
5. a kind of preparation method having base high-entropy alloy according to claim 2, it is characterised in that described in step 1
When alloy substrate is two kinds of elements, the molar ratio between two kinds of elements is b, b=1.
6. a kind of preparation method having base high-entropy alloy according to claim 2, it is characterised in that press quality in step 1
Percentage weighs 55% alloy substrate and 45% alloy element, obtains the raw material of base high-entropy alloy.
7. a kind of preparation method having base high-entropy alloy according to claim 2, it is characterised in that press quality in step 1
Percentage weighs 80% alloy substrate and 20% alloy element, obtains the raw material of base high-entropy alloy.
8. a kind of preparation method having base high-entropy alloy according to claim 2, it is characterised in that described in step 1
Alloy substrate is Fe.
9. a kind of preparation method having base high-entropy alloy according to claim 2, it is characterised in that described in step 1
Alloy element is Al, Cr and Ni.
10. a kind of preparation method having base high-entropy alloy according to claim 2, it is characterised in that described in step 2
Induction melting method is completed according to the following steps：
1., there is the raw material of base high-entropy alloy to be successively added to according to the sequence of material melting point from low to high by what is weighed in step 1
In ceramic crucible in induction melting furnace；
2., induction melting furnace is vacuumized, until the vacuum degree of induction melting furnace be less than 2.0 × 10-3MPa, then it is molten to induction
Argon gas is filled in furnace, until the pressure in induction melting furnace is to 0.05MPa；
3., repeat step 2. 3 times to 5 times；
4., with melting electric current be under an argon atmosphere that melting has raw material 5min~10min of base high-entropy alloy under 50A~70A, with
Furnace cooling but, has obtained base high-entropy alloy.
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| CN109518063A (en) * | 2018-11-19 | 2019-03-26 | 中原工学院 | A kind of high-performance multi-principal elements alloy cutter and preparation method thereof |
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| CN116752051B (en) * | 2023-06-20 | 2024-03-26 | 中南大学 | Multi-component multifunctional high-strength green alloy and preparation method thereof |
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